Hot-air and steam heater



( 2 SheetsSheet 1.

J. P. PEASE.

HOT AIR AND STEAM HEATER. No. 362,779. Patented May 10, 18-87.

WITNESSES: INVBNTOR Q Q L am ATTORNEYS N. PETERS. FholLrLllhographcr, \Vashmg10". D. c.

2 Sheets-Sheet 2.

(E0 Model.)

J. F. PEASE.

HOT AIR AND STEAM HEATER.

. N0. 362,779. Patented May 10 1887.

INVENTOR BY M ATTORNEYS WITNESSES:

NITED STATES JOHN F. PEASE, OF SYRACUSE, NEWV YORK.

HOT-=AiR AND STEAM HEATER.

SPECIFICATION forming part of Letters Patent N0. 362,779, dated May 10, 1887.

Application filed December 9. 1886. Serial No. 221,090.

To all whom it may concern:

Be it known that I, JOHN F. PEASE, of Syracuse, in the county of Onondaga, in the State of New York, have invented newand useful Improvements in a Hot Air Furnace and Steam-Heater Combined, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact deseription.

This invention relates to the class of steam and air heaters which have the boiler arranged inside of a combustion-chamber surmounting the firepot; and the invention consists in an improved construction and combination of parts, as hereinafter fully described, and set forth in the claims.

In the annexed drawings, Figure 1 is a front elevation of a hot-air furnace and steam-heater combined embodying my improvements. Fig. 2 is a vertical transverse section of the same. Fig. 3 is a horizontal transverse section on line a: m, Fig. 2; and Fig. 4 is a side elevation of that portion of the heating apparatus which is above the ash-pit, part of the combustionehamber shell being broken away to show the convergent flue which conducts the products of combustion from the upper smoke-box to the fines which lead to the radiator surround ing the fire-pot.

Similar lettersof reference indicate corre sponding parts.

A represents the ash-pit, B the fire-pot,and C the combustion-chainber, mounted, successively, one upon the other. The combustionchamber (3 is of a greater diameter than the fire-pot and joined thereto by an intervening flaring section, D, and under this flaring section and nearly surrounding the fire-pot is the radiator R, which communicates with the combustion-chamber by pipes or flues I I, extending from the flaring section D to the radiator at opposite sides of the feed-door F, in the same or similar manner as shown in mypending application for Letters Patent, Serial No. 203,686, filed May 29, 1886.

L denotes a steam-boiler of cylindrical form set in an upright position in the combustionchamber 0, and concentric therewith. It is supported by legs Z Z, secured to the boilerand resting on the flaring section D. Said boiler is of a diameter to reach part way over the flaring section D, and yet leave an annular (No model.)

space between the vertical sides of the boiler and combustion-chamber. Vertically through the boiler are extended a series of fines, a a, through which the products of combustion ascend from the fire-pot to the smoke-box N, which is formed over the top of the boiler by the crowning top of the combustioirchamber shell. In the annular space between the sides of the boiler and combustionchamber I place partitions I) 1), two of which run from the top of the front portion of the boiler obliquely down to the edges of the fines I I at the sides nearest the front, and the other two partitions b b run from the top of the rear portion of the boiler obliquely down to the rear edges of the flues I. I, thereby forming at the front and rear of the boiler updraft-fines c 0, each of which gradually diminishes in width from the base to the top,and at opposite sides of the boiler two downdraft-fines, c c, which converge, respectivel y, to the tines I I. When the furnaceis in full operation, the products of combustion escape through the tines a a and c c to the smoke-box N, and thence descend in the flues c c, and pass through the tines I I and the radiator It, in which they circulate toward the rear thereof, whence they escape through a pipe, (1, into the eXit-pipef.

A direct-draft pipe, 0, leads from the rear portion of the combustioil-chamber C to the eXit-pipef, and is provided with a damper, h, which, when opened, allows the products of combustion to pass from the flaring section D up through the fine 0 at the rear of the boiler and out through the pipe 0 direct to the exitpipe f, and thus increases the air-draft through the fire-pot. This is necessary when first starting the fire. After the fire is fairly under way and in condition to burn the gases emitted from the fuel, the damper h is to be closed to cause the products of combustion to take the circuitous passage through the radiator, and thereby heat the same.

The described apparatus is inclosed in the usual way by a casing, H, (represented by dotted lines in the drawings) said casing being provided with a suitable air-inlet at its base and with air-pipes at the top, which latterpipes are extended to the apartments of the building to be heated. The air entering at the base of the case ascends and passes around the outside of the radiator and between the radiator and fire-pot, and next impinges the under side of the flaring section D, and thence circulates around the exterior of the combustion-chamber O, and by contact with the aforesaid heated parts the air becomes intensely heated, and in this condition it is conducted by the pipes it to the apartments to be heated. v 1010 represent the pipes which conduct the steam to the usual radiators in the apartments to be heated, and 1- designates the pipe which returns the water of condensation from said radiators to the boiler.

In order to render as dry as possible the steam which enters the pipes 12, I employ a trap, O, of the form of a drum or cylinder, placed in a horizontal position outside of and preferably above the boiler and combustionchamber and inside of the casing H, so as to be brought more intimately in contact with the heat generated by the furnace. The pipes pp tap the steam-space of the boiler and terminate in the trap or cylinder 0 at the center of its ends, and the pipes pp, which lead to the radiators in the apartments to be heated, are extended from the top of said trap. Another pipe, t, is extended from the bottom of the trap into the boiler to a greater depth than the pipes 12, to return to the boiler the water of condensation collected in the trap from the steam in its passage through the pipes which conduct the steam to the apartments to be heated.

One of the chief merits of my present invention consists in the combination of the enlarged combustion-chamber joined to the firepot by the flaring section D and the corresponding enlargement of the diameter of the boiler, which reaches part way over the flaring section D and presents large heatingsurfaces at opposite ends and is capable of con-- taining a great number of flues a a.

Having described my invention, what I claim as new,and desire to secure by Letters Patent, .1s

1. In combination with the fire-pot, superposed combustion-chamber, and radiator surrounding the fire-pot, a boiler arranged concentrically in the combustion-chambe r, flues extended from the combustion-chamber to the radiator, and lines between the sides of the boiler and combustion-chamber and formed convergent to the flues leading to the radiator, substantially as set forth and shown.

2. In combination with the fire-pot, the superposed combustion-chamber of greater diameter than the fire-pot and joined thereto by a flaring section, a boiler arranged concentrieally in the combustion-chamber and extending part way over the flaring section, a smoke-box over the boiler, flues extending vertically through the boiler, a radiator surrounding the fire-pot, flues extending from the flaring section of the combustion-chamber to the radiator, and flues between the vertical sides of the boiler and combustion-chamber and formed convergent to the flues leading to the radiator, substantially as described and shown.

3. The combination,with the fire-pot, of the flaring section D, the combustion-chamber O, mounted on top of the flaring. section, the boiler L, arranged in the combustion-chamber with downdraft-flues around the exterior of the boiler and with the smoke-box N over the boiler, updraft-flues through the boiler, and the radiator It, communicating with the aforesaid downdraft-flues, substantially as specified.

4. In combination with combustion-chamber C and the boiler L, arranged in said combustion-chamber with the smoke-box N over the top of the boiler, the cylinder 0, arranged horizontally above said smoke-box, the pipes 19 p, extending from the center of opposite ends of the cylinder down through the smoke-box and tapping the top of the boiler, the pipe 15, extending from the bottom of the cylinder down through the smoke-box and through the top of the boiler into the water-space thereof, and the steam-pipes p p, extending from the top of the cylinder, substantially as specified.

5. In combination withthe combustion-chamber O and boiler L, arranged in said combustion-chamber with the smoke-box N over the top of the boiler, the cylinder O ,arranged horizontally above the smoke-box, the pipes 12 12, extending from the center of opposite ends of the cylinder down through the smoke-box and tapping the top of the boiler, the pipe t, ex-

tending from the bottom of the cylinder down through the smoke-box and into the waterspace of the boiler, the steam-pipes p 10, extending from the top of the cylinder, and the casing H, extending over the cylinder.0 and inclosing the same in common with the combus- .tion-chamber, substantially as described and 

